Lovely card. I remember spending way too much on one of these when they were new. I need more 1080TIs like I need a hole in the head or I'd be mighty tempted to jump on it :)
So final speed is gonna be 4266. The ram refuses to boot any higher no matter the (safe) voltage or relaxed timings. I've got it stable just under 1.4v at that speed and temps have settled in at around 45C. Thanks for the help and advice.